I was about 80% sure he had the flush. Should I fold on turn, just call down or get the guy AI?

GIBBUS23 is at seat 1 with 434.20
McCall is at seat 2 with 767.00
PingZen is at seat 3 with 1025.70
bolad is at seat 4 with 171.64
Kraul67 is at seat 5 with 0.00

McCall posts the large blind 6.00
GIBBUS23 posts the small blind 3.00

GIBBUS23: --, --
McCall: --, --
PingZen: 8s, 10s
bolad: --, --

Pre-flop:

PingZen: Raise 18.00
bolad: Fold
GIBBUS23: Call 18.00
McCall: Fold

Flop (Board: Qh, Ks, 6s):

GIBBUS23: Check
PingZen: Bet 36.00
GIBBUS23: Call 36.00

Turn (Board: Qh, Ks, 6s, 3s):

GIBBUS23: Check
PingZen: Bet 54.00
GIBBUS23: Raise 108.00 (this screams like a flush, could be something else strong too)
PingZen: Call 108.00

River (Board: Qh, Ks, 6s, 3s, 10h):

GIBBUS23: Bet 114.00 (he has like ~180 or so left)
PingZen: ??